const todo = (state, action) => {
    switch (action.type) {
        case 'ADD_TODO':
            return {
                id: action.id,
                text: action.text,
                completed: false
            }
        case "TOGGLE_TODO":
            {
                if (state.id !== action.id) {
                    return state;
                }
                return {
                    ...state,
                    completed:!state.completed
                }
            }
            default:
            return state
    }
}
 const todos=(state=[],action)=>{
     switch(action.type){
         case "ADD_TODO":
            return [
                ...state,
                todo[undefined,action]
            ]
            case "TOGGLE_TODO":
            return state.map(t=>{
                todo(t,action)
            })
            default:
                return false
     }
 }
 export default todos;